Star Micronics TSP200 Manual de usuario Pagina 23

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PRINCIPLES OF OPERATION
Fig. 2-9 Timing Chart
2-3. Feed-Motor Drive Circuit
The printer uses a 4-phase step motor (phase 1-2 excitation) to implement paper feed. The motor rotates through a certain
angle each time it receives a pulse from the drive circuit. The following diagram illustrates the excitation method. Figure
2-11 shows the feed-motor drive circuit.
Fig. 2-10 Motor Control by Phase 1-2 Excitation
Fig. 2-11 Feed-Motor Drive Circuit
1 2 3 4 5 6 7 8
1
2
3
4
ON
ON
ON
ON
ON
Step
Reverse Feed
Forward Feed
PB4
TP8
TP9
TP10
TP11
1
3
2
4
CN7
1
2
3
6
5
4
+24V
TR5
TA1
DT9
M-GND
IC1
CPU
tw
STB1
STB2
STB3
HD ON
(B)
BEO
(Q)
Trigger Retrigger Retrigger
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